Apparatus for refining used oil



1931-. F. -o. KRIEGER 1,820,871

APPARATUS FOR REFINING USED OIL Original Filed Oct; 24. 1927 IN VEN TOR.

F 0. Knp'eger,

A TORNEY.

Patented Aug. 25,1931

UNITE STATES PATENT FFEQE FRANKLIN KRIEGER, OF KANSAS CITY, MISSOURI, ASSIGNOR T BEFINOIL MANU- FACTURING CORPORATION, OF KANSAS CITY, MISSOURI, A CORPORATION OF MISSOURI APPARATUS FOR REFINING USED OIL Original application filedOctober 24, 1927, Serial No. 228,278. Divided and this application filed March 8,

1929. Serial This invention relates to apparatus-for refining used mineral lubricating oil and is a division of my copending application for Uniied States patent, Serial No. 228,278, and. which is designed to be used primarily in ,connection with the apparatus described in said application, Serial No. 228,278, which is for a portable machine to be installed and operated by relatively unskilled labor in garages or the like. It has for its object to provide suitable contact apparatus to retain the heat in the oil as it comes from a still where it can be contacted-with an active adsorptive reagent and to produce a comparatively inex pensive device of the character described, which will be strong and durable.

My means of accomplishing the foregoing object may be more readily understood by having reference to the accompanying drawings, in which- Figure 1 is a side elevation partly in section of my oil reclamation device showing my invention partly in section for the sake of clearness; and

,Figure 2 is a detail sectional view taken on the line 22 in Figure 1.

Similar reference numerals refer to similar parts throughout the entire description.

As shown in the drawings, a frame 1 built of suitable angle iron or other material possessing suificient rigidity to support the various parts of the mechanism carries a still 2 which may be provided withsuitable heating means 3. The still is connected by suitable pipe connections'to a vacuum pump 4, a condensing chamber 5 leading to a receiver 6. Pipe 7 is connected to a suitable source of oil supply the oil being drawn into the still through this pipe by means of the vacuum pump 4. This pipe '7 extends to a T 8, one end of which leads to a pipe 9 which communicates with the clarifying tank 10. Suitable hand valves 11 and 12 are provided to control the passage of oil through the pipes 7 and 9. After the'oil to be reclaimed has remained in the still 2 for about four hours all diluents previously contained therein Will have been removed, and the hot oil may be drawn oif into the clarifying tank positioned below the still 2 by opening the valve 11. This tank 10 is preferably double-Walled to provide an air space 13 around its sides and bottom which will perform the function of retaining the heat within the oil an unusually long time although it will be obvious to persons skilled in "the art that any suitable form of insulation may be employed for this purpose. The pipe 9 is connected by a union to a vertical dischargepipe 14 which terminates just above the bottom of the tank 10 and supports a perforated plate 15 which is spaced slightly from the bottom of the inner tank. A suitable reagent 16 is carried on the perforated plate 15 so that the oil as it fills the tank 10 must contact With the reagent. The tank 10 is preferably pivotally mounted at 17 to the frame 10 and has a handle 18 which may be used to manually tilt the reservoir when it is desired to'pour oil from the spout 19. It willbe understood that the reagent is active and that the operator must regulate the flow of 'oil past the valve 11 to maintain the reaction within reasonable limits. The combination just described is peculiarly adapted for use with relatively unskilled and non-technical operators. The spout 19 is preferably constructed of a metal which is light in color and relatively non-tarnishable whereby the operator when he decants the supernatant refined oil in a shallow stream over the spout may im-. mediately detect the passage of any particles of residue or sludge and take steps to prevent such material from passing over with the oil.

Having described my invention, what I regard as new and desire to secure by Letters Patent is:

1. An apparatus for contacting used 111- bricating oils consisting of a cylindrical tank having imperforate side walls, means to insulate the said walls and the bottom of said tank, a foraminated reagent supporting member within said tank which abuts the side walls and is spaced from the bottom, a pipe which supports said member adapted to convey oil into said tank and below said member. I

2. An apparatus for contacting used lubricating oils consisting of a cylindrical tank having imperforate side walls, means to insulate the said walls and the bottom of said tank, a frame to support said tank, a foraminated reagent supporting member within said tank which abuts the side walls and is spaced from the bottom,- a pipe which supports said member adapted to convey oil into said tank and below said member. 7

3. An apparatus for contacting used lubrieating oils consisting of a cylindrical tank having imperforate side walls, means to insulate the said walls and the bottom of said tank, a frame to pivotally support said tank,

a foraminated reagent supporting member within said tank which abuts the side walls and is spaced from the bottom, a pipe which supports said member adapted to convey oil into said tank and below said member.

4. An apparatus for contacting used lubricating oils consisting of a cylindrical tank having imperforate side walls, means to insulate the said walls and the bottom of said tank, a frame'to pivotally support said tank,

a for-animated reagent supporting'member within said tank which abuts the side walls and is spaced from the bottom, a pipe which supports said member adapted to convey oil into said tank and below said member, means to control the flow of oil through said pipe.

In witness whereof I hereunto subscribe my name.

FRANKLIN o. Kain GER. 

